#define BLYNK_TEMPLATE_ID "TMPL6kZoxwnOl"
#define BLYNK_TEMPLATE_NAME "Blynk notifikasi"
#define BLYNK_AUTH_TOKEN "uEWzy9r09IAUKvIOHS6ETVsAja4JNZWZ"

#include <ESP32Servo.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

char auth[] = BLYNK_AUTH_TOKEN ;
char ssid[] = "Wokwi-GUEST"; //nama hotspot yang digunakan
char pass[] = "";

#define LDR_PIN 34
#define SERVO_PIN 2
#define BUZZER_PIN 4
#define RED_PIN 14
#define GREEN_PIN 12

Servo servo;
LiquidCrystal_I2C lcd(0x27, 16, 2);  // I2C address 0x27, 16 column and 2 rows
BlynkTimer timer;

int ldrValue;
int pos = 0;

void sendSensor()
{
  if(ldrValue == 1){
    Blynk.virtualWrite(V0, ldrValue); 
  }else{
    Blynk.virtualWrite(V0, ldrValue);
  }

}

void setup() {
  Serial.begin(115200);
  servo.attach(SERVO_PIN, 500, 2400);
  pinMode(LDR_PIN, INPUT);
  //pinMode(BUZZER_PIN, OUTPUT);
  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  //lcd.begin(16, 2);  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  lcd.clear();  
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(1000, sendSensor);
}

void loop() {
  ldrValue = digitalRead(LDR_PIN);
  Serial.println("LDR Value: " + String(ldrValue));

  if (ldrValue == 1) {
    Serial.println("Light detected! Activating servo and buzzer.");
    //tone(BUZZER_PIN, 200);
    digitalWrite(RED_PIN, HIGH);
    digitalWrite(GREEN_PIN, LOW);
    for (pos = 0; pos <= 180; pos += 1) {
      servo.write(pos);
      delay(15);
    }
    lcd.setCursor(0, 0);
    lcd.print("Kebakaran");
    delay(1000);
  } else {
    for (pos = 180; pos >= 0; pos -= 1) {
      servo.write(pos);
      delay(15);
    }
    lcd.setCursor(0, 0);
    lcd.print("Aman");
    digitalWrite(GREEN_PIN, HIGH);
    digitalWrite(RED_PIN, LOW);
    //noTone(BUZZER_PIN);
    delay(1000);
  }

  //delay(1000);
  lcd.clear();// Clear the LCD for the next reading
  Blynk.run(); //menjalankan blynk
  timer.run();
}